Method of making aqueous emulsions of acrylate copolymers in the presence of a degraded starch protective colloid

US4171407A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Wilhelm Elser · Riedlingen, DE
• Klaus Huebner · Ober-Ramstadt, DE
• Hans Ottofrickenstein · Zwingenberg, DE
• Hans Boessler · Darmstadt, DE

Key dates

• Filing date: Dec 15, 1977
• Grant date: Oct 16, 1979
• Expiry date: Dec 15, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31855
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Non-blocking coatings are disclosed, which coatings comprise an acrylate ester emulsion polymer prepared by polymerization in the presence of a degraded starch which, in a 10 percent solution in 1 N NaOH, has a viscosity not greater than 15 mPa . s at a velocity gradient D=532.1 s.sup.-1.